It's Imperative that you leave the pictures there or else, they will no longer exist. From what I read, you get to download 250 pics without having to pay to use their service. Unless you are short on space, no need to delete.
I think i goofed up. I'm still new to these forums and learning. So last night I'm searching through threads figuring out how to add my cards to my signature. After 3 hrs or so (lol) I get it done. But heres my goof up I believe. As im uploading the images to photobucket to get the direct code to paste in the html codes( french to me) , I delete the picture from Photobucket before moving on to the next card image. I'll find out later when i upload the pics again to photobucket and replace the direct code. I'm not even sure if this post makes sense lol. Can everyone confirm or deny that's the problem with the cards in my signature?
I would add that you should dump photobucket altogether and use imgur instead. Much easier, less ads, and better all the way around.